JPH0744864U - Electronics unit - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the size and thickness of electronic equipment. [Structure] A synthetic resin chassis 1, a spacer protrusion 1c integrally formed with the chassis 1, and a circuit board 2 mounted on the spacer protrusion 1c and having various contacts on both sides thereof.
A plurality of movable electronic components 14 and 16 having operation portions 4 and 7 provided on the surface of the circuit board 2 on the side opposite to the chassis 1 are provided. A movable member 4a that is housed in a space 1d formed by a spacer protrusion 1c between the chassis 1 and the circuit board 2 and that interlocks with the operation unit 4, and is connected to a contact on the circuit board 2 that is attached to the movable member 4a. The contact member 3 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic device unit in which a plurality of movable electronic device units are provided on a single circuit board.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, electronic device units such as various circuit changeover switches incorporated in, for example, portable televisions are provided as a single unit such as a switch separately formed in a switch mounting portion formed on a circuit board or a tuning dial mounting portion. The unit parts were mechanically attached and electrically connected. At this mounting part, the terminals extending from the unit parts and the mounting claws were inserted into the through holes of the circuit board and fixed by soldering or bending. The circuit board is further fixed to the chassis of the electronic device.

[0003]

[Problems to be solved by the device]

 In the case of the above-mentioned conventional technique, the circuit board having the switch and tuning dial unit parts mounted on the circuit board is further fixed to the chassis, so the thickness of the electronic device becomes thicker. This was an obstacle to making electronic devices smaller, lighter and thinner. In addition, many manufacturing processes were complicated and the manufacturing cost was high.

The present invention has been made in view of the above problems of the conventional technique, and an object thereof is to provide an electronic device unit that contributes to downsizing and thinning of electronic devices.

[0005]

[Means for Solving the Problems]

 This invention is composed of a synthetic resin chassis, a spacer protrusion integrally formed with the chassis, a circuit board mounted on the spacer protrusion and having various contacts on both sides, and a side opposite to the chassis. It is housed in a space formed by a plurality of movable electronic components such as a switch and a variable resistor having an operating portion provided on the surface of the circuit board, and the spacer protrusion between the chassis and the circuit board. The electronic device unit is composed of a movable member such as a sliding portion that interlocks with the operation portion, and a contact member such as a slider that is attached to the movable member and connected to a contact on the circuit board. Further, the movable member of the movable electronic component is also provided on the circuit board on the side opposite to the chassis, and the movable member has a slider that slides on the surface of the circuit board. Further, the operating section and the movable member are integrally formed, and the operating section projects from a through hole provided in the circuit board to the side opposite to the chassis.

Further, in the present invention, the first movable member that interlocks with one operation portion of the plurality of movable electronic components is a sliding portion that is integrally formed with the operation knob that is the operation portion. The second movable member that interlocks with other operation units of the plurality of movable electronic components is a pinion integrally formed with the dial that is the operation unit and a resistance adjustment gear that meshes with the pinion. A slider, which is the contact member, is attached to each of the resistance adjusting gears, and the pinion is an electronic device unit in which a rack having a music selection guide is further meshed.

[0007]

[Action]

 In the electronic equipment unit of this invention, a space is formed between the chassis and the circuit board, and the movable member and the contact member of the movable electronic component are provided in this space, and the contact member directly contacts the contact of the circuit board. By connecting them, the overall thickness of the electronic device unit is reduced and the assemblability is improved.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. The electronic device unit of this embodiment is a tuner unit of a portable television receiver, and has a chassis 1 integrally molded in a plate shape with synthetic resin, and is formed integrally with the chassis 1 on one side thereof. The circuit board 2 on which the receiving circuit is formed is attached to the spacer projecting piece 1c protruding from. Spacers 1c are formed between the chassis 1 and the circuit board 2 at regular intervals by the spacer protrusions 1c.

In addition, in the switching portion of the circuit board 2 in which a contact (not shown) for switching between VHF and UHF radio waves is formed, a through hole 2a is formed in the circuit board 2 and a changeover switch 14 which is a movable electronic component is provided. Has been. The changeover switch 14 has an operation knob 4 which is an operation member to which a switching slider 3 which is a contact member is attached, and the operation knob 4 is inserted into the through hole 2a. Further, the operation knob 4 is integrally formed with a sliding portion 4a which is a movable member located in a space 1d between the chassis 1 and the circuit board 2. The switching slider 3 is fitted and fixed to the locking convex portion 4b of the sliding portion 4a, and the sliding contact portion of the switching slider 3 slides into a contact of a switching circuit (not shown) of the circuit board 2 so that UHF and V Switch the reception radio wave of HF. The sliding portion 4a of the operation knob 4 is provided in sliding contact with the chassis 1 between the chassis 1 and the circuit board 2 and slidable without rattling.

A sliding convex portion 4d slightly protruding from the sliding surface 4c is formed on the sliding surface 4c on the back surface of the sliding portion 4a. Further, the sliding convex portion 4d sandwiches the sliding convex portion 4d. Engagement portions 4e each formed of a concave hole are formed in the.

On the surface of the chassis 1 that faces the sliding surface 4c of the operation knob 4, an engaging portion 1a made of a protrusion that engages with the engaged portion 4e is formed. The engaging portion 1a is sandwiched between the engaging portion 1a and the engaging portion 1a. The chassis 1 is formed with rectangular through holes 1b each having a long axis in the sliding direction of the operating knob 4, and the constituent portion of the chassis 1 sandwiched between the through holes 1b functions as an elastic piece 5.

The shaft 6 formed integrally with the chassis 1 penetrates the through hole 2b formed in the circuit board 2 and is on the opposite side of the chassis 1 from the operation part of the tuner part 16 as a movable electronic component. A tuning dial 7 is rotatably fitted. Further, in the tuner section 16, a pinion 8 which is a movable member formed coaxially with the tuning dial 7 is rotatably fitted to the shaft 6. Further, the pinion 8 is fitted with a flexible pointer rack 10 that is integrally formed with the tuning guide 9, which is the tuner section 16, and moves the tuning guide 9, and at the same time, the resistance adjusting gear that is a movable member. It fits with 11.

Further, the resistance adjusting gear 11 constitutes a variable resistor of the tuner section 16, and the rotary shaft 11 a is fitted into the through hole 2 c of the circuit board 2 and is formed on the surface of the circuit board 2. A resistance adjusting slider 12 that is a contact member that comes into sliding contact with a contact of a circuit (not shown) is attached to the circuit board 2 side. The resistance adjusting gear 11 meshes with the pinion 8 of the tuning dial 7, and the resistance value is changed by the rotation of the tuning dial 7 to perform tuning. The resistance adjusting gear 11 is provided on the surface of the circuit board 2 opposite to the chassis 1. Further, the operation knob 4 and the tuning dial 7 are also provided on the opposite side of the chassis 1 with the circuit board 2 interposed therebetween.

According to this embodiment, the sliding portion 4a for switching the contact is arranged in the space 1d between the chassis 1 and the circuit board 2, which contributes to the thinning of the tuner unit. Furthermore, the operating knob 4, the tuning dial 7, and the resistance adjusting gear 11 are provided on one side of the circuit board 2, which also contributes to the thinning of the tuner unit. In addition to reducing the man-hours required for manufacturing the unit, the man-hours required for manufacturing the electronic equipment in which this unit is incorporated are also greatly reduced.

In addition to the electronic device unit of the present invention and the tuner unit for a television, a tuner unit for a radio and all electronic device units having movable electronic parts such as changeover switches used in many electronic devices It goes without saying that it can be used.

[0016]

[Effect of device]

 The electronic device unit of the present invention forms a space between the chassis and the circuit board, and the movable member is arranged in this space, so that the unit can be significantly thinned, and the electronic device is small and lightweight. Will contribute to the realization.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a plan view of an operation knob of this embodiment.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a partial cross-sectional front view of the operating knob of this embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis 1c Spacer protrusion 1d Space 2 Circuit board 3,12 Slider (contact member) 4 Operation knob (operation part) 4a Sliding part (movable member) 7 Tuning dial (operation part) 11 Resistance adjustment gear 14 Changeover switch (movable electronic parts) 16 Tuner section (movable electronic parts)

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 1, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (4)

[Scope of utility model registration request] 1. A synthetic resin chassis, a spacer projection piece integrally formed with the chassis, a circuit board mounted on the spacer projection piece, and a circuit board side opposite to the chassis. A plurality of movable electronic parts having operation parts provided, a movable member housed in a space formed by the spacer projecting piece between the chassis and the circuit board and interlocking with the operation part; An electronic device unit comprising a contact member mounted and connected to a contact on the circuit board. 2. A synthetic resin chassis, a spacer projecting piece integrally formed with the chassis, a circuit board mounted on the spacer projecting piece, and a circuit board side opposite to the chassis. A plurality of movable electronic parts having an operating part provided therein, and a space part formed by the spacer projecting piece between the chassis and the circuit board are housed in the space, and interlock with one operating part of the plurality of movable electronic parts. A first movable member, a second movable member provided on the circuit board on the side opposite to the chassis and interlocking with other operation parts of the plurality of movable electronic components, and attached to each of the movable members. An electronic device unit comprising a contact member connected to a contact on a circuit board. 3. The operation section and the movable member are integrally formed, and the operation section projects from a through hole provided in the circuit board to a side opposite to the chassis.
Electronic equipment unit as described. 4. A first movable member that interlocks with one operation portion of the plurality of movable electronic components is a sliding portion integrally formed with an operation knob that is the operation portion, and the plurality of movable electronic components. The second movable member that interlocks with the other operation unit of the component is a pinion integrally formed with the dial that is the operation unit and a resistance adjustment gear that meshes with the pinion. 3. The electronic device unit according to claim 2, wherein each of the contact members is a slider, and the pinion is further engaged with a rack having tuning guides.